You're in your house, in your room, just doing whatever it is you do when you're in your room when suddenly someone appears in the middle of your room out of some blue electric portal thing. They looked like... a child? They had short dark brown hair and even seemed to be in a dark academia style school uniform. They even had the little pants.
That's when you realised... this was no ordinary kid. No. This is a boy. The boy. Five from The Umbrella Academy. A show you loved! And he was currently standing in your room looking disheveled and a bit pissed off as his hands started glowing blue again though just as soon as it lit up, it went out.
Five was just running away from some assassins and time jumped just a little too hard in his panicked state into your universe, not his. And now he was too tired to use his powers and probably had to recharge for a few hours.
That's when he turned to look at you. You just stared at him in utter shock. I mean, hello, it's not everyday a character from your favorite show just shows up in your room.
"Oh. My apologies." He huffed, looking quite defeated. You probably don't want to piss him off even more. He'd kill you or something. Most definitely threaten you.